Is it necessary to add different conversion functions to enum?

[Neargye]

Now we have

1. std::optional<E> enum_cast(std::string_view value) noexcept
2. std::optional<E> enum_cast(std::underlying_type_t<E> value) noexcept

Is it necessary to add the following functions? Will it be useful to someone?

1. std::optional<E> enum_from_string_nothrow(std::string_view value) noexcept
2. std::optional<E> enum_from_string_nocase_nothrow(std::string_view value) noexcept
3. E enum_from_string(std::string_view value)
4. E enum_from_string_nocase(std::string_view value)
5. std::optional<E> enum_from_integral_nothrow(std::underlying_type_t<E> value) noexcept
6. E enum_from_integral(std::underlying_type_t<E> value)
7. E enum_from_integral_unchecked(std::underlying_type_t<E> value)
   See https://github.com/Neargye/magic_enum/tree/from_functions

[alexkaratarakis]

Is
std::optional<E> enum_from_string_nothrow(std::string_view value) noexcept
different from:
std::optional<E> enum_cast(std::string_view value) noexcept
?

[Neargye]

No.
std::optional<E> enum_cast(std::string_view value) noexcept == std::optional<E> enum_from_string_nothrow(std::string_view value) noexcept
std::optional<E> enum_cast(std::underlying_type_t<E> value) noexcept == std::optional<E> enum_from_integral_nothrow(std::underlying_type_t<E> value) noexcept